Several months after Shizuka began living with her father-in-law, Takashi, she started noticing that her underwear kept going missing, leaving her with an odd, unsettling feeling. One day, while folding laundry, she accidentally caught Takashi picking up one of her panties mixed in with the clothes. When she called out in shock, Takashi panicked, clutching his chest and collapsing to the floor. Concerned, Shizuka turned to look for medicine—but in that moment, Takashi suddenly lunged at her, pinning her down and touching her body in ways she never expected. Overwhelmed by pleasure she hadn't felt in years, Shizuka found herself unable to resist, both mentally and physically.